The radiator is the most important element of the engine cooling system. Its task is to dissipate the heat generated by the engine to the surroundings, through the cooling fluid circulating in the cooling system. The radiator consists of a core made of aluminum (or—less often—of copper), and tanks are made of brass, steel, aluminum or plastic. There are two basic versions of radiators with frame or without frame. The selection of materials for the construction of the radiator depends on its use, working conditions and its environment.
Depending on the application, the radiator can be equipped additionally with a frame, an additional heat exchanger (for example, an oil cooler) or may have an integrated expansion tank.
Retarder coolers (continuous brake) are a variation of oil coolers in which the cooling medium is the coolant is from the engine cooling system. They are applied in hydraulic retarder systems, where the working hydraulic oil is heated during operation and requires cooling.
These coolers are made with high pressure technologies:
- Aluminum—with “plate & bar” technology,
- Stainless steel—with „brazed plate” technology.